good base rifle. all the upgrades you NEED are a hop up, bucking, buffer, and buffer lock. which will be around $100 to get a reliable and fairly accurate rifle. this will require some DIY mods. not sure how this compares to other gbbr's because i havent owned any others but i believe in terms of least needed parts it goes 1. inokatsu 2. KWA 3.WA? (don't use cheap bb's or less than .28's i recommend .30 because they will f up your hop up and bolt carrier, happened to me) check out boobiem4h's youtube channel for all the mod info you need